Ball-bearing.



UNlTlED %Tares arnwr QFFTCEO JOHN A. GUINN, OF BALTIMORE, MARYLAND, ASSIGNOR TO FREDERICK HOOKER, OF SAME PLACE.

ALL BEARlNG SPECEFZCATION forming part of Letters Patet No. 678,*7'79, clated July' 16, 1991-.

Application filed September 5, 1900. Serial No. 29,030. (No model.)

To all whom it may concern:

Be it known that I, JOHN A. GUINN, a citizen of the United States, residing at Baltinore, State of Maryland, have invented certain new and useful Improvenents in Ball- Bearings, of which the following is a specification.

My invention is an improvement in hallbearings, and has for its object to provide a device of this character which will be easy to assemble and very durable in Construction.

The invention consists in certain constructions, arrangements, and combinations of the parts, which will be hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which--- Figure 1 is a Vertical sectlonal view of a pulley embodying one form of ny invention. Fig. 2 is an enlarged detail sectional View of the hearing illustrated in Fig. 1. Figs. 3 and 4 are sectional Views of slightly modified forms of bearings.

Referring to Fig. 1, A designates a pulley, in which is tightly Secured an annular outer hearing B, and B' is the inner uniformly-cylindrical hearing, adapted to receive the shaft or spindle C of the pulley and provided with ball-races D. Rows of antifriction-balls E are located in the races D and support the outer hearing B, so that the lattermay freely turn.

F designates a bushing, which, as best shown in Fig. 2, is fitted tightly with frictional engagenent in the outer hearing B be tween the rows of balls and is spaced from or out of contact with the inner hearing B'. The bushing F is separate or distinct from the bearings B and B' and is designed to separate the balls and to maintain the rotation of the parts in a practically fixed plane, and to this end it is forned with beveled edges G, which bear against the balls and prevent side motion.

To assemble the parts of the hearing, the

bushing F and inner hearing B' are caused to protrude out of one end of the onter bearing B, one row of balls is dropped into place, the bushing F and inner hearing B' are then driven out of the other end of the outer bearing, the other row of balls is dropped into place, and the bushing F and inner hearing B are finally driven back to a central position, as shown in Fig. 2, the bushing F fitting tightly in the outer hearing.

As llustrated in Fig. 3, the hushing, which is located between the rows of balls, is made in two sections F' F whose adjacent edges are oppositely inclined and form a seatffor wedging screws G', which work in threaded openings in the outer hearing B. The parts in this form of hearing are assexnbled in the same manner as that described for Figs. l and 2, and after the parts are inplace the screws Gr' are inserted and bear upon the seat f, the wedging action of the screws forcing the two sections of the bushing apart, and thus adj usting the hearing to the desired point. Fig. 4: illustrates another slightly-modified form of hearing, in which the bushing F between the balls is formed in one piece and is provided with a seatf', which may be a circular depression or extend annularly around the bushin g, as shown. G designates a screw or pin, of which there may be any desired number, working in a threaded opening in the outer hearing B and fitted in the seat f', so as to preclude the possibility of any side wise movement of the bushing.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a device of the character described, the combination of an outer bearing; an inner uniformly-cylindrical hearing formed with ball-races; rows of antifriction-balls in said races and supporting the outer bearing to rotate about the inner hearing; and a distinct or separate bnshing tightl y fitting with frictional engagement in the outer hearing between the rows of balls, and hearing against said balls and out of contact With said inner bearing, as set forth.

2. The combination of the outerand inner bearings; rows of anti frietion balls interposed between said bearings; a separate or distinot bushing fitting with frictional engage'ment in said outer bearing between the rows of balls and arranged to bear against said balls, said bushing being provided With a seat for a pin IQ or screw; and a pin or screw working through the outer bearing into said seat, as set forth.

In testimony whereof I affix'my signature in the presence of two witnesses.

. JOHN A. GUINN. Witneses ES. STITT, CHARLES B. MANN, J r. 

